Exercise roller



FIG. 1 is a perspective view of the exercise roller in accordance with the present invention;

FIG. 2 is a side view of the exercise roller of FIG. 1, wherein the view from all sides is identical; and,

FIG. 3 is an end view of the exercise roller of FIG. 1, wherein the view from both ends is identical. 

The ornamental design for an exercise roller, as shown and described. 